I just switch my wheels and tires back to stock size from after market 19x8.5 and 19x9.5, tire size 245F and 275.
Now I notice that when I am driving on highway speed ~70-75mph, my steering wheel shakes left and right at the fairly quick frequency, though the car still travels straight. I have never experienced when I went from stock to aftermarket wheels/tires.

Is the wheels balancing messed up? If not, will performing an alignment cure this problem?

Thanks In Advance.

 

alignment probably.. get it fixed before it starts to feather

 

balance makes it shake...do that first, then do an alignment if the balance doesnt solve your problem

 

Thanks, apparently the shop didn't do a good job on balancing the wheel when they put them on

 

so you can send me the money i saved you on an alignment now

 

Yeah, they may have thrown a wheel weight as well. Still a balance issue.